Mington



A. F- MASURY ET AL SECTIONAL RUBBER PAVEMENT Sept. 9,1930. Re. 17,795

Origirial Filed July 1'7 1924 2 Sheets-Sheetl I I INVENTOH/W A TTOR/VEKS Sept. 9, 1930. MASURY ET Re. 17,795

SECTIONAL RUBBER PAVEMENT Original Filed July 17. 1924 2 Sheets-Sheet 2 A TTORIVE Y5 Reissued Sept. 9, 1930 UNITED STATES PATIPENT OFFICE ALFRED F. msumr AND AUGUST 11. LEIPERT, or New YORK, N. Y., AssrGNoRs, BY

MESNE ASSIGNMENTS, TO THE RUBBER SHOCK INSULATOE CORPORATION, or WIL- MINGTON, DELAWARE. A CORPORATION DELAWARE SECTIONAL RUBBER PAVEMENT Original No. 1,643,024, dated September 20, 1927, Serial No. 726,441, filed July 17, 1924; Application for reissue filed August 7, 1929. Serial No. 384,054.

This invention relates to roadways and methods of making the same and more particularly to paving blocks and methods of manufacturing such paving blocks. The invention has for its particular object to provide a pavement which shall be yielding to a degree to minimize the shocks impressed upon pedestrians, animals and vehicles traveling thereover and the noise resulting from such travel. Such a paving is broadly illus trated in the copending application of August H. Leipert, Serial No. 7 22, 64:8. filed June 27, 1924. The present invention has to do primarily with various practical applications of the broad principle described in the application. In order that the invention may be clearly understood andreadily carried into effect the same will now be described more fully with reference to the accompanying drawings illustrating preferred embodiments thereof and in which:

Figure 1 is a sectional view showing one form of paving block and the means for maintaining it under internal static'pressure which also serves as interlocking means with adjacent blocks.

Fig. 2 is a view in side elevation showing the paving block according to Figure 1.

Fig. 3 is a plan view showing another modification of the paving block and the means for maintaining it under compression.

Figure4 is a vertical sectional view taken in the plane indicated by the line 44 in Figure 3 and looking in the direction of the arrows.

Figure 5 is a view partly in section of an other modification. of the invention showing the means for adjusting the compression on an individual paving block.

Figure 6 is a view showing the paving block illustrated in Figure 5 and looking from above.

Figure 7 is a vertical sectional view showing another form of paving block and the mechanical means for retaining it under compression.

Figure 8 is a view showing the paving block disclosed in Figure 7 and looking from above.

Figure 9 is a view showing another modification of the pavement according to the present invention and means for placing the individual blocks under compression.

Itis proposed, according to the present invention, that the paving block shall consist of a mass of yielding material, such as livecomprising 'a solid mass of yielding material (1 adapted to rest, when assembledwith similar blocks, upon a solid base 6 to form a pavement and encircled throughout the major portion of its height by a band a of metallic material drawn tightly about the block whereby the resilient material therewithin may be maintained under compression. The two free ends of the band are preferably interlocked as at c to form not only a permanent joint but also a projection or tongue on that end face of the band to interlock with a co-operating groove 0 in the respective diametrically disposed face of an adjacent block. It will thus be seen that a paving block has been provided which is substantially rectangular in horizontal cross section and which is formed in one of its shorter end faces with a vertically disposed groove and in the other of its shorter end faces with a vertically disposed tongue. When laying the pavement, the blocks are laid between the curbs so that the'proximate end faces are juxtaposed which will serve to compress somewhat the uncompressed edges a to form a solid yielding pavement without cracks or open joints between the respective blocks.

In Figures 3 and 4 there is disclosed a plurality of paving blocks in which the shape of the respective blocks is relied upon to.

maintain the same under the desired internal static pressure. The blocks are formed generally wedge-shape in horizontal cross section so that in laying the same between the curbs b an individual block may be forced in a horizontal direction between adjacent blocks. One of the blocks d is shown as formed in opposed vertical faces with her-i conveniently laid according to accepted prac "tice. 1' The paving block illustrated in Figure 5 is formed as a mass of yielding material having beveled edges 7. Centrally disposed between the ends thereof, the longer faces f are formed respectively with vertical grooves f for the passage of bolts 9 threaded. withf' right and left hand threads respectively into threadedrecesses it? in rectangular retaining elements it whereof a respectiye face 72 is beveled to ,co-operate with thebeveled faces f of th'eblock. Midway between the ends of the-grooves f the block isfurther/hol- "lowed out slightly as at f to. receivethe wrenchengaging portion 9" of the'lag'screw.

It will thus be seen thatupon assembly of the lag .screws 9 and rectangular retaining elements h the block may be'placed' under compression by taking up on the-lag screws in. usual. manner.

As apavement,theblocks arelaid upon a'solid base I; in close"proximity, thetop and bottom faces of the block 7, f, respectively, taking-the wear and spacingthe metallicportions from the contacting. elements whereby shocks and stresses are" relieved,

In Figures 7 and: 8, means are disclosed .forobtaining substantially the same results.

In." this instance, substantially rectangular blocks 1' having beveled edges z'" are. retained under compression by rectangular .metallic framesj whereof theextremities j are turned away from the resilient material-t0 avoid 'a sharp edge which would wear the material, .while the proximatecdges of the plates are interlocked as at j It will, be apparent that, upon assemblingthe blocks" with a .pair of frame members j, the blockcanbe placed under the desired internal compressionby suitably .bending over and. interlockingthe proximate edges at f. .Here again. the surface of the block resting upon. the base b is. of yielding cliiaraeter as well as the top-surface subject to wear,the turned over edges being sufficiently spaced from the wearing surfaces to avoid all metal. contact [with either the base or traflic passingthereover.

Referring'now .toFigure 9, the'blocks k may be either square orobl-ong in horizontal .cross.sectio11.' In thisinstance only theupper edge is beveled as. at ,The curb may have :an overlying portion 6' with which the bevel kiengages while the proximate block K maybe spaced from block k to. receive. an inverted frusto-pyramidal yielding. member Z bored centrally as at .Zto receive bolt m.

. If desired the head m5 of bolt m may bear upona metallic seat member a to minimize wear on .theyieldingmaterial; Boltm may be either an expansion bolt ora bolt of the usual kind in which event the threaded end may engage the threaded hole of a metallic nutrocastin the. concrete base 6.. Upon assembly, by screwingthe bolt into the nut 0,

the seat member a is caused to compress the beveled resilient retaining member Z which inturn-engages thebeveled edges kflflc of adjacent blocks to cause all of the resilient blocksto -be retainedunder internal static pressurein'a manner which will be readily understood upon inspection of Figure 9.

Various resilient blocks and means for retainingthem under compression and the manner of'assemblingthem into a complete pavement have beendisclosed. It will be understood that. the invention. is not to be limited to theprecise relation ofv elements illustrated in the drawings but various combinations thereof will occur to those skilled in the art and are to be deemed within the scope. of. the present-invention. x .Whatwe claimis 1". A..-roadwaycomprising a rigid, solid base, contiguous blocks of rubber supported on said lbase,interlocking means, and a pluralityotmeanslto maintain said blocks under compression. 1 v I 2...A.-.paving.blockcomprising a block of rubberwand' retainingmeans encircling said bloclgasaid meansrcomprising a strip of metal of such .width as to confine. the greater. part of the-block. against. lateral distort-ion when subjected. toservice loads ina pavement,

3.}.Alpavement. comprising a plurality. of

rubber blocks, and a retaining band about eachibleckgthe. retaining band of each block cont-acting with the band of an. adjacent block. thtAnpavement comprising a plurality. of

contiguous rubber "blocks, .and a plurality of j contiguousretaining bands, said bands en circling said-blocks respectively.

. 5. A.-=pavement. comprising a plurality of contiguous-i pavement blocks, each compri ing ablockaof rubber and a-confining band encircli-ng the. same, said band being: of sulii cient widtlrsubstantially to preventv lateral stresses ineachblock from beingc-ommunicated'. totadjoining blocks.

6. A pavement comprising a plurality of contiguous-pavement blocks,v each comprising a block of. rubber, bands confining individual. blocks leaving the upper margins thereof unconfined,.wherehy the sum of all the upper. surfaces ofthe blocks forms the complete surface-of the. area of pavement thus composed.

In-testimony whereof', e have signed this specification;

ALFRED F. MAS-URY. AUGUST H. LEIPERT- 

